Subversion Repositories planix.SVN

#include "ssh.h"

struct CipherState
{
        RC4state enc;
        RC4state dec;
};

static CipherState*
initrc4(Conn *c, int isserver)
{
        CipherState *cs;

        cs = emalloc(sizeof(CipherState));
        if(isserver){
                setupRC4state(&cs->enc, c->sesskey, 16);
                setupRC4state(&cs->dec, c->sesskey+16, 16);
        }else{
                setupRC4state(&cs->dec, c->sesskey, 16);
                setupRC4state(&cs->enc, c->sesskey+16, 16);
        }
        return cs;
}

static void
encryptrc4(CipherState *cs, uchar *buf, int nbuf)
{
        rc4(&cs->enc, buf, nbuf);
}

static void
decryptrc4(CipherState *cs, uchar *buf, int nbuf)
{
        rc4(&cs->dec, buf, nbuf);
}

Cipher cipherrc4 =
{
        SSH_CIPHER_RC4,
        "rc4",
        initrc4,
        encryptrc4,
        decryptrc4,
};